Optical scanner



FIG. 1 is a top, front, right side perspective view of an optical scanner showing our new design;

FIG. 2 is a top plane view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear side elevational view thereof; and,

FIG. 6 is a bottom elevational view thereof. 

The ornamental design for an optical scanner, as shown and described. 